I also mind map books, courses and more. Here is the GitHub project of all the mind maps : https://github.com/nikitavoloboev/knowledge-map

There is already a working Alfred workflow that allows to find the mind map you need in an instant. Here is a screencast of how it looks in action : http://quick.as/b1gwsneao

I am making a search engine for it now and hope I can release a working version of it very soon. I would love to hear though how I can improve these mind maps and what you guys think of this idea as a whole. Would you use this?